Exhaust System Hardware - to Stainless, or Not to Stainless?

I’ve got two air-cooled motorcycles with aluminum heads. I’m replacing the studs & nuts that hold the exhaust headers to the heads; I’m trying to determine what material I want the new fasteners to be made of.

There seems to be zero consensus on this that I can find.

To me, stainless seems like the natural choice thanks to its anti-corrosion properties. But some folks say that it’s subject to galling with aluminum, or not strong enough.

And what about the nuts? I was leaning towards bronze, but am open to suggestions.

No matter what the material, I’m going to coat the hardware in nickel anti-seize compound when installing.